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AddNoiseCommand Constructor(Int32,RasterColorChannel)

Summary

Initializes a new AddNoiseCommand class object with explicit parameters.

Syntax

Java

Objective-C

WinRT C#

C++

public AddNoiseCommand(  
   int range, 
   Leadtools.Imageprocessing.RasterColorChannel channel 
)

Public Function New( _ 
   ByVal range As Integer, _ 
   ByVal channel As Leadtools.Imageprocessing.RasterColorChannel _ 
)

public AddNoiseCommand(  
   int range, 
   Leadtools.Imageprocessing.RasterColorChannel channel 
)

- (instancetype)initWithRange:(NSUInteger)range channel:(LTRasterColorChannel)channel

public AddNoiseCommand( 
   int range,  
   RasterColorChannel channel 
)

function AddNoiseCommand(  
   range , 
   channel  
)

public: 
AddNoiseCommand(  
   int range, 
   Leadtools.Imageprocessing.RasterColorChannel channel 
)

Parameters

range
Percentage of coverage, expressed in tenths of a percent. Valid values are 0 to 1000.

channel
value that represents the color plane to which to add the noise.

Remarks

In order to speed up widely used image processing filters in LEADTOOLS, the grayscale value (master channel) of a colored image is calculated using the following formulas:

#define CalcGrayValue(r, g, b) ((L_UCHAR)(((L_UCHAR) (((2 * (L_UINT) (r)) + (5 * (L_UINT) (g)) + (L_UINT) (b) + 4) / 8)))) 
#define CalcGrayValue16(r, g, b) ((L_UINT16) (((2 * (L_UINT32) (r)) + (5 * (L_UINT32) (g)) + (L_UINT32) (b) + 4) / 8)) 
#define CalcGrayValue32(r, g, b) ((L_UINT32) (((2 * (L_UINT32) (r)) + (5 * (L_UINT32) (g)) + (L_UINT32) (b) + 4) / 8))

Example

Run the AddNoiseCommand to add red noise to the image(Default constructor example).

WinRT C#

Silverlight C#

Silverlight VB

Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.ImageProcessing 
Imports Leadtools.ImageProcessing.Effects 
 
    
Public Sub AddNoiseConstructorExample() 
   Dim codecs As New RasterCodecs() 
   codecs.ThrowExceptionsOnInvalidImages = True 
   Dim leadImage As RasterImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "sample2.cmp")) 
 
   ' Prepare the command 
   Dim command As AddNoiseCommand = New AddNoiseCommand(250, RasterColorChannel.Red) 
   command.Run(leadImage) 
   codecs.Save(leadImage, Path.Combine(LEAD_VARS.ImagesDir, "Result.jpg"), RasterImageFormat.Jpeg, 24) 
 
End Sub 
 
Public NotInheritable Class LEAD_VARS 
Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images" 
End Class

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing; 
using Leadtools.ImageProcessing.Effects; 
 
       
public void AddNoiseConstructorExample() 
{ 
   // Load an image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
   RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "sample2.cmp")); 
 
   // Prepare the command 
   AddNoiseCommand command = new AddNoiseCommand(250, RasterColorChannel.Red); 
   command.Run(image); 
   codecs.Save(image, Path.Combine(LEAD_VARS.ImagesDir, "Result.jpg"), RasterImageFormat.Jpeg, 24); 
 
} 
 
static class LEAD_VARS 
{ 
public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images"; 
}

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Effects; 
using Leadtools.ImageProcessing; 
 
       
public async Task AddNoiseConstructorExample() 
{ 
   // Load an image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
   // Load the image 
   string srcFileName = @"Assets\Image1.cmp"; 
   StorageFile loadFile = await Tools.AppInstallFolder.GetFileAsync(srcFileName); 
   RasterImage image = await codecs.LoadAsync(LeadStreamFactory.Create(loadFile)); 
 
   // Prepare the command 
   AddNoiseCommand command = new AddNoiseCommand(250, RasterColorChannel.Red); 
   command.Run(image); 
   //Save as BMP 
   string destFileName = @"result.bmp"; 
   StorageFile saveFile = await Tools.AppLocalFolder.CreateFileAsync(destFileName); 
   await codecs.SaveAsync(image, LeadStreamFactory.Create(saveFile), RasterImageFormat.Bmp, 24); 
 
}

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing; 
using Leadtools.ImageProcessing.Effects; 
using Leadtools.Examples; 
 
public void AddNoiseConstructorExample(RasterImage image, Stream outStream) 
{ 
   // Prepare the command 
   AddNoiseCommand command = new AddNoiseCommand(250, RasterColorChannel.Red); 
   command.Run(image); 
   // Save result image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.Save(image, outStream, RasterImageFormat.Jpeg, 24); 
   image.Dispose(); 
}

Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.ImageProcessing 
Imports Leadtools.ImageProcessing.Effects 
 
Public Sub AddNoiseConstructorExample(ByVal image As RasterImage, ByVal outStream As Stream) 
   ' Prepare the command 
   Dim command As AddNoiseCommand = New AddNoiseCommand(250, RasterColorChannel.Red) 
   command.Run(image) 
   ' Save result image 
   Dim codecs As RasterCodecs = New RasterCodecs() 
   codecs.Save(image, outStream, RasterImageFormat.Jpeg, 24) 
   image.Dispose() 
End Sub